Hi Greg and welcome aboard!
I also own a 260 but mine has a home made radar arch on it that I built for just under thirty bucks.(The marina wanted a thousand bucks for a stainless one!!!)
My friend Chris used to own a 260 years ago and his had the factory arch on it. It was a red boat and I saw the picture in his hallway of his house. I will see if I can get a jpg of it from him and post it here.
Meanwhile, here is a couple of pics of my 260